CFA Level I Exam · Investments in Private Capital: Equity and Debt

Private Debt Risks, Returns and Diversification

Q: What is the illiquidity premium in private debt?

It is the extra return investors require for holding loans they cannot sell quickly at a fair price. It is only one part of the yield pickup over public bonds. Credit risk and complexity also contribute.

Q: Does private debt diversify a portfolio?

It can add diversification because its cash flows and structures differ from public bonds and equities. The benefit is smaller than reported numbers suggest. Smoothed valuations understate correlation, and defaults rise in downturns.

Q: How is private debt valued?

Usually with models, such as discounting expected cash flows at a spread that reflects credit quality and illiquidity, or with manager estimates. There is often no observable market price. That makes valuation less reliable than for traded bonds.

Q: What should due diligence cover?

Review the manager's track record, team, underwriting and workout skill. Review the fund's strategy, fees, leverage, concentration, valuation policy, covenants and liquidity terms. Also check reporting quality.

Updated 7 October 2026 · Fact-checked

Private debt is lending that is not traded on public markets, such as direct loans, mezzanine and distressed debt. It offers higher yields than public bonds, mainly as compensation for illiquidity, credit risk and complexity. To solve questions, identify the strategy, its seniority and the risk it carries, then judge the return and diversification claims.

Understand Private Debt Risks, Returns and Diversification

Private debt is lending to companies, real estate or projects outside public bond markets. The lender is often a fund, a bank or a non-bank manager. Terms are negotiated one to one, so each loan is different. Common types are direct lending, mezzanine debt, venture debt, distressed debt and unitranche loans.

The main return driver is yield above what public bonds pay. Part of that extra yield is an illiquidity premium: you are paid for being unable to sell quickly. Part pays for credit risk, for complex structures and for the manager's work in sourcing and monitoring loans. Many private loans are floating rate, so income rises and falls with a reference rate, which reduces interest rate duration risk but raises the borrower's burden when rates climb.

Risks are real. Default risk and loss severity depend on seniority and collateral. Senior secured loans sit first in the capital structure and recover more. Mezzanine debt is subordinated, so it earns more but loses more in default. Distressed debt is bought at a discount, and returns depend on restructuring outcomes. Other risks are illiquidity, lack of market prices, leverage used by the fund, and concentration in a few borrowers.

Valuation is harder than for public bonds. There is often no market price, so values come from models, using discounted cash flows with a spread tied to credit quality, or from the manager's estimates. Reported values can be smoothed, which makes volatility and correlations look lower than they really are. Treat low reported risk with caution.

Due diligence covers the manager and the fund. For the manager, check the track record, team stability, sourcing, underwriting and workout skill. For the fund, check the strategy, fees, leverage, covenants, concentration, valuation policy, liquidity terms and reporting. Diversification benefit is real but smaller than reported, because private debt still depends on the credit cycle and tends to fall in a downturn alongside other risky assets.

Key formulas to remember

Required return decomposition: Private debt yield ≈ risk-free rate + credit spread + illiquidity premium + complexity premium; A conceptual build-up. It is not an exact pricing formula, so use it to reason about why yields exceed public bonds.
Expected loss: Expected loss = probability of default × loss given default; Loss given default = 1 − recovery rate. Senior secured loans have lower loss given default than subordinated debt.
Priority of claims: Senior secured > senior unsecured > subordinated/mezzanine > equity; Higher in the ranking means a lower yield and a higher expected recovery.
Smoothed-return effect: Reported standard deviation (smoothed) < true standard deviation; Appraisal-based valuations understate risk and correlation with public markets.

How to solve Private Debt Risks, Returns and Diversification questions

Use this order for any private debt question, whether it is about risk, return, valuation or diversification.

1Identify the strategy: direct lending, mezzanine, venture debt, distressed or unitranche.
2Place the debt in the capital structure and note any collateral. This sets recovery and expected loss.
3Note whether the rate is fixed or floating. Floating rate lowers duration risk but raises borrower credit stress when rates rise.
4Name the return sources: credit spread, illiquidity premium, fees and any equity kicker or discount purchase.
5Check valuation: is there a market price or only a model or manager estimate? If appraised, expect smoothed risk.
6Judge diversification honestly: benefit exists, but correlations rise in stress and reported numbers understate them.
7Choose the option that matches, then eliminate the option that overstates a benefit or ignores a risk.

Quickest way: Seniority, Liquidity, Valuation check

When to use it: Use this for most three-option conceptual questions where time is short.

Ask where the loan ranks. Lower rank means higher return and higher loss.
Ask if the investor can exit. If not, expect an illiquidity premium.
Ask how it is priced. Model or manager values mean smoothed volatility.
Reject any option that claims private debt has high return with no extra risk, or perfect diversification.

Common mistakes in Private Debt Risks, Returns and Diversification

Treating the whole yield pickup over public bonds as pure illiquidity premium.
The premium is the best-known reason for higher yield, so it gets all the credit.
Fix: Split it into credit risk, illiquidity, complexity and manager skill.
Believing floating-rate private loans carry no risk from rising rates.
Low duration is confused with low total risk.
Fix: Remember that higher rates raise borrower interest costs and default risk.
Taking reported low volatility and correlation at face value.
Candidates assume reported figures are market-based.
Fix: Appraisal and model values smooth returns, so true risk and correlation with public markets are higher.
Assuming mezzanine debt ranks with senior loans.
Both are called debt.
Fix: Mezzanine is subordinated, so it has higher yield but lower recovery.
Ignoring fund-level issues in due diligence.
Focus stays on the borrowers.
Fix: Also check fees, leverage, valuation policy, concentration and liquidity terms.

Worked examples

Example 1

An investor compares a senior secured private loan with a subordinated mezzanine loan to the same company. Which statement is most likely correct? A) The mezzanine loan has lower expected recovery and a higher yield. B) The senior loan has lower expected recovery and a lower yield. C) Both loans have the same expected recovery because the borrower is the same.

Show the solution

Same borrower does not mean same claim. Option C ignores priority, so reject it.
Senior secured debt is paid first and has collateral, so its recovery is higher. Option B says lower recovery, so reject it.
Mezzanine is subordinated, so it recovers less in default and needs a higher yield as compensation. Option A fits.

Answer: A

Example 2

A fund reports annual volatility of 3% for its private loan portfolio, using manager valuations. A public high-yield bond index has volatility of 9%. What is the best interpretation? A) Private debt is truly three times less risky than public high-yield. B) Reported volatility is likely understated because of smoothing. C) Volatility is irrelevant for private debt.

Show the solution

Private loans rarely have market prices, so values come from models or manager estimates.
Such values change slowly, which smooths returns and lowers measured volatility and correlation.
Option A treats the number as true risk, so reject it. Option C is wrong because risk still matters.
Option B recognises the smoothing effect.

Answer: B

Exam tips

Expect three-option conceptual questions. Look for the option that overstates diversification or ignores illiquidity.
Link higher yield to higher risk. Any option showing free extra return is almost certainly wrong.
Know the seniority order and tie it to recovery and yield.
When valuation is by model or appraisal, think smoothed volatility and understated correlation.
No penalty for wrong answers, so eliminate one option and pick between two.

Practice questions from Investments in Private Capital: Equity and Debt